The κατα in καταστροφή means 'down to' or 'according to' rather than sudden, and implies strongly a bad turn The inverse of κατα is often ανα though αναστροφή

The κατα in καταστροφή means 'down to' or 'according to' rather than sudden, and implies strongly a bad turn The inverse of κατα is often ανα though αναστροφή means literally "up turn" or invert So maybe ευστροφη a "good turn" (eustrophe) would be better coinage But arguing with JRR Tolkien on language coinage and being right would be a ... ευκαταστροφη i.e. good luck! But in general I love their noticing of the overflowing grace -- that's something that gives joy and happiness in the world